Create GrCommandBuilder
BUG=skia:
Review URL: https://codereview.chromium.org/1113313003
diff --git a/src/gpu/GrCommandBuilder.cpp b/src/gpu/GrCommandBuilder.cpp
new file mode 100644
index 0000000..aafc345
--- /dev/null
+++ b/src/gpu/GrCommandBuilder.cpp
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrCommandBuilder.h"
+
+#include "GrColor.h"
+#include "GrInOrderDrawBuffer.h"
+#include "GrTemplates.h"
+#include "SkPoint.h"
+
+static bool path_fill_type_is_winding(const GrStencilSettings& pathStencilSettings) {
+ static const GrStencilSettings::Face pathFace = GrStencilSettings::kFront_Face;
+ bool isWinding = kInvert_StencilOp != pathStencilSettings.passOp(pathFace);
+ if (isWinding) {
+ // Double check that it is in fact winding.
+ SkASSERT(kIncClamp_StencilOp == pathStencilSettings.passOp(pathFace));
+ SkASSERT(kIncClamp_StencilOp == pathStencilSettings.failOp(pathFace));
+ SkASSERT(0x1 != pathStencilSettings.writeMask(pathFace));
+ SkASSERT(!pathStencilSettings.isTwoSided());
+ }
+ return isWinding;
+}
+
+GrTargetCommands::Cmd* GrCommandBuilder::recordDrawBatch(State* state, GrBatch* batch) {
+ // Check if there is a Batch Draw we can batch with
+ if (!this->cmdBuffer()->empty() &&
+ Cmd::kDrawBatch_CmdType == this->cmdBuffer()->back().type()) {
+ DrawBatch* previous = static_cast<DrawBatch*>(&this->cmdBuffer()->back());
+ if (previous->fState == state && previous->fBatch->combineIfPossible(batch)) {
+ return NULL;
+ }
+ }
+
+ return GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), DrawBatch, (state, batch,
+ this->batchTarget()));
+}
+
+GrTargetCommands::Cmd*
+GrCommandBuilder::recordStencilPath(const GrPipelineBuilder& pipelineBuilder,
+ const GrPathProcessor* pathProc,
+ const GrPath* path,
+ const GrScissorState& scissorState,
+ const GrStencilSettings& stencilSettings) {
+ StencilPath* sp = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), StencilPath,
+ (path, pipelineBuilder.getRenderTarget()));
+
+ sp->fScissor = scissorState;
+ sp->fUseHWAA = pipelineBuilder.isHWAntialias();
+ sp->fViewMatrix = pathProc->viewMatrix();
+ sp->fStencil = stencilSettings;
+ return sp;
+}
+
+GrTargetCommands::Cmd*
+GrCommandBuilder::recordDrawPath(State* state,
+ const GrPathProcessor* pathProc,
+ const GrPath* path,
+ const GrStencilSettings& stencilSettings) {
+ DrawPath* dp = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), DrawPath, (state, path));
+ dp->fStencilSettings = stencilSettings;
+ return dp;
+}
+
+GrTargetCommands::Cmd*
+GrCommandBuilder::recordDrawPaths(State* state,
+ GrInOrderDrawBuffer* iodb,
+ const GrPathProcessor* pathProc,
+ const GrPathRange* pathRange,
+ const void* indexValues,
+ GrDrawTarget::PathIndexType indexType,
+ const float transformValues[],
+ GrDrawTarget::PathTransformType transformType,
+ int count,
+ const GrStencilSettings& stencilSettings,
+ const GrDrawTarget::PipelineInfo& pipelineInfo) {
+ SkASSERT(pathRange);
+ SkASSERT(indexValues);
+ SkASSERT(transformValues);
+
+ char* savedIndices;
+ float* savedTransforms;
+
+ iodb->appendIndicesAndTransforms(indexValues, indexType,
+ transformValues, transformType,
+ count, &savedIndices, &savedTransforms);
+
+ if (!this->cmdBuffer()->empty() &&
+ Cmd::kDrawPaths_CmdType == this->cmdBuffer()->back().type()) {
+ // The previous command was also DrawPaths. Try to collapse this call into the one
+ // before. Note that stenciling all the paths at once, then covering, may not be
+ // equivalent to two separate draw calls if there is overlap. Blending won't work,
+ // and the combined calls may also cancel each other's winding numbers in some
+ // places. For now the winding numbers are only an issue if the fill is even/odd,
+ // because DrawPaths is currently only used for glyphs, and glyphs in the same
+ // font tend to all wind in the same direction.
+ DrawPaths* previous = static_cast<DrawPaths*>(&this->cmdBuffer()->back());
+ if (pathRange == previous->pathRange() &&
+ indexType == previous->fIndexType &&
+ transformType == previous->fTransformType &&
+ stencilSettings == previous->fStencilSettings &&
+ path_fill_type_is_winding(stencilSettings) &&
+ !pipelineInfo.willBlendWithDst(pathProc) &&
+ previous->fState == state) {
+ const int indexBytes = GrPathRange::PathIndexSizeInBytes(indexType);
+ const int xformSize = GrPathRendering::PathTransformSize(transformType);
+ if (&previous->fIndices[previous->fCount*indexBytes] == savedIndices &&
+ (0 == xformSize ||
+ &previous->fTransforms[previous->fCount*xformSize] == savedTransforms)) {
+ // Fold this DrawPaths call into the one previous.
+ previous->fCount += count;
+ return NULL;
+ }
+ }
+ }
+
+ DrawPaths* dp = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), DrawPaths, (state, pathRange));
+ dp->fIndices = savedIndices;
+ dp->fIndexType = indexType;
+ dp->fTransforms = savedTransforms;
+ dp->fTransformType = transformType;
+ dp->fCount = count;
+ dp->fStencilSettings = stencilSettings;
+ return dp;
+}
+
+GrTargetCommands::Cmd* GrCommandBuilder::recordClear(const SkIRect* rect,
+ GrColor color,
+ bool canIgnoreRect,
+ GrRenderTarget* renderTarget) {
+ SkASSERT(renderTarget);
+
+ SkIRect r;
+ if (NULL == rect) {
+ // We could do something smart and remove previous draws and clears to
+ // the current render target. If we get that smart we have to make sure
+ // those draws aren't read before this clear (render-to-texture).
+ r.setLTRB(0, 0, renderTarget->width(), renderTarget->height());
+ rect = &r;
+ }
+ Clear* clr = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), Clear, (renderTarget));
+ GrColorIsPMAssert(color);
+ clr->fColor = color;
+ clr->fRect = *rect;
+ clr->fCanIgnoreRect = canIgnoreRect;
+ return clr;
+}
+
+GrTargetCommands::Cmd* GrCommandBuilder::recordClearStencilClip(const SkIRect& rect,
+ bool insideClip,
+ GrRenderTarget* renderTarget) {
+ SkASSERT(renderTarget);
+
+ ClearStencilClip* clr = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(),
+ ClearStencilClip,
+ (renderTarget));
+ clr->fRect = rect;
+ clr->fInsideClip = insideClip;
+ return clr;
+}
+
+GrTargetCommands::Cmd* GrCommandBuilder::recordDiscard(GrRenderTarget* renderTarget) {
+ SkASSERT(renderTarget);
+
+ Clear* clr = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), Clear, (renderTarget));
+ clr->fColor = GrColor_ILLEGAL;
+ return clr;
+}
+
+GrTargetCommands::Cmd* GrCommandBuilder::recordCopySurface(GrSurface* dst,
+ GrSurface* src,
+ const SkIRect& srcRect,
+ const SkIPoint& dstPoint) {
+ CopySurface* cs = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), CopySurface, (dst, src));
+ cs->fSrcRect = srcRect;
+ cs->fDstPoint = dstPoint;
+ return cs;
+}
+
+GrTargetCommands::Cmd*
+GrCommandBuilder::recordXferBarrierIfNecessary(const GrPipeline& pipeline,
+ const GrDrawTargetCaps& caps) {
+ const GrXferProcessor& xp = *pipeline.getXferProcessor();
+ GrRenderTarget* rt = pipeline.getRenderTarget();
+
+ GrXferBarrierType barrierType;
+ if (!xp.willNeedXferBarrier(rt, caps, &barrierType)) {
+ return NULL;
+ }
+
+ XferBarrier* xb = GrNEW_APPEND_TO_RECORDER(*this->cmdBuffer(), XferBarrier, ());
+ xb->fBarrierType = barrierType;
+ return xb;
+}